Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474745 | Method of mining | — | 2002-11-05 |
| 6460937 | Method of longwall panel development | Bret Edward Leisemann | 2002-10-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474745 | Method of mining | — | 2002-11-05 |
| 6460937 | Method of longwall panel development | Bret Edward Leisemann | 2002-10-08 |